AT90LS4433-4AC Atmel, AT90LS4433-4AC Datasheet - Page 97

• Manufacturer Part Number: AT90LS4433-4AC
• Description: IC MCU 4K 4MHZ A/D LV 32TQFP
• Manufacturer: Atmel
• Series: AVR® 90LSr

Specifications of AT90LS4433-4AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Serial Programming
Characteristics
1042H–AVR–04/03
Figure 68. Serial Programming Timing
Table 36. Serial Programming Characteristics, T
(unless otherwise noted)
Table 37. Minimum Wait Delay after the Chip Erase Instruction
Table 38. Minimum Wait Delay after Writing a Flash or EEPROM Location
Symbol
1/t
t
1/t
t
t
t
t
t
t
Symbol
t
Symbol
t
CLCL
CLCL
SHSL
SLSH
OVSH
SHOX
SLIV
WD_ERASE
WD_PROG
CLCL
CLCL
Parameter
Oscillator Frequency (V
Oscillator Period (V
Oscillator Frequency (V
Oscillator Period (V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
MOSI
MISO
SCK
3.2V
18 ms
t
3.2V
9 ms
OVSH
CC
CC
= 2.7 - 6.0V)
= 4.0 - 6.0V)
CC
CC
= 2.7 - 6.0V)
= 4.0 - 6.0V)
t
SHSL
3.6V
14 ms
3.6V
7 ms
t
SHOX
A
= -40°C to 85°C, V
2 t
2 t
2 t
t
4.0V
6 ms
Min
250
125
CLCL
4.0V
12 ms
10
0
0
CLCL
CLCL
CLCL
AT90S/LS4433
t
SLSH
Typ
t
16
SLIV
CC
Max
5.0V
4 ms
32
4
8
5.0V
8 ms
= 2.7 - 6.0V
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
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